ARM: dts: imx6q-icore: Add touchscreen node

max11801 touchscreen on Engicam iCoreM6 Quad module is
connected via i2c1, so add max11801: touchscreen@48 on i2c1.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Domenico Acri <domenico.acri@engicam.com>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: NJagan Teki <jagan@amarulasolutions.com>
Signed-off-by: NShawn Guo <shawnguo@kernel.org>

arch/arm/boot/dts/imx6q-icore.dts

@@ -58,6 +58,15 @@
 	status = "okay";
 };
 
+&i2c1 {
+	max11801: touchscreen@48 {
+		compatible = "maxim,max11801";
+		reg = <0x48>;
+		interrupt-parent = <&gpio3>;
+		interrupts = <31 IRQ_TYPE_EDGE_FALLING>;
+	};
+};
+
 &ldb {
 	status = "okay";